A cast bronze base with 2-way cable holder and threaded swivel air terminal boss. Swivel allows air terminal to remain vertical when mounted on sloped surfaces. Features a wide mounting surface for a variety of mounting applications. 5/16-18 stainless steel bolts and washers. 3-1/8 x 3-3/8 in. (79.4 x 92 mm); approximately 16 oz. (453 g). Use suffix 3/8, 1/2 or 5/8 inch to denote air terminal thread size.